Buggy code:
public class aH { public enum PrimitiveType { Float , Double , Integer , Boolean , String , Word , Percentage ; } static final Pattern floatPrimitive = Pattern . compile ( "^[-+]?[0-9]+[.]?[0-9]*([eE][-+]?[0-9]+)?$" ) ; static final Pattern doublePrimitive = aH . floatPrimitive ; static final Pattern percentagePrimitive = Pattern . compile ( "-?(?:\\d+)?(\\.\\d+)?(%)?" ) ; static final Pattern integerPrimitive = Pattern . compile ( "(-)?\\d+" ) ; static final Pattern booleanPrimitive = Pattern . compile ( "true|false" , Pattern . CASE_INSENSITIVE ) ; static final Pattern wordPrimitive = Pattern . compile ( "\\w+" ) ; public static class Argument { public String raw_value ; String prefix = null ; String lower_prefix = null ; String value ; String lower_value ; boolean has_prefix = false ; public Argument ( String string ) { } public static aH . Argument valueOf ( String string ) { } public boolean startsWith ( String string ) { } public boolean hasPrefix ( ) { } public aH . Argument getPrefix ( ) { } public boolean matches ( String values ) { for ( String value : CoreUtilities . split ( values , ',' ) ) { <START_BUG> if ( CoreUtilities . toLowerCase ( value . trim ( ) ) . equals ( lower_value ) ) { <END_BUG> return true ; } } return false ; } public boolean matches ( String ... values ) { } public void replaceValue ( String string ) { } public String getValue ( ) { } public boolean matchesEnum ( Enum < ? > [ ] values ) { } public boolean matchesEnumList ( Enum < ? > [ ] values ) { } public boolean matchesPrefix ( String values ) { } public boolean matchesPrefix ( String ... values ) { } public boolean matchesPrimitive ( aH . PrimitiveType argumentType ) { } public boolean matchesArgumentType ( Class < ? extends dObject > dClass ) { } public boolean matchesArgumentTypes ( Class < ? extends dObject > ... dClasses ) { } public boolean matchesArgumentList ( Class < ? extends dObject > dClass ) { } public Element asElement ( ) { } public < T extends dObject > T asType ( Class < T > clazz ) { } public void reportUnhandled ( ) { } @ Override public String toString ( ) { } } public static List < aH . Argument > interpret ( List < String > args ) { } private static final Pattern argsRegex = Pattern . compile ( "[^\\s\"\'¨]+|\"([^\"]*)\"|\'([^\']*)\'|¨([^¨]*)¨" ) ; public static String [ ] buildArgs ( String stringArgs ) { } public static String debugObj ( String prefix , Object value ) { } public static < T extends dObject > String debugList ( String prefix , Collection < T > objects ) { } public static String debugUniqueObj ( String prefix , String id , Object value ) { } public enum ArgumentType { LivingEntity , Item , Boolean , Custom , Double , Float , Integer , String , Word , Location , Script , Duration ; } public static boolean matchesArg ( String names , String string_arg ) { } @ Deprecated public static boolean matchesValueArg ( String names , String string_arg , aH . ArgumentType type ) { } public static boolean getBooleanFrom ( String arg ) { } public static double getDoubleFrom ( String arg ) { } public static float getFloatFrom ( String arg ) { } public static int getIntegerFrom ( String arg ) { } @ Deprecated public static dList getListFrom ( String arg ) { } public static long getLongFrom ( String arg ) { } @ Deprecated public static dScript getScriptFrom ( String arg ) { } public static String getStringFrom ( String arg ) { } @ Deprecated public static Duration getDurationFrom ( String arg ) { } public static boolean matchesDouble ( String arg ) { } @ Deprecated public static boolean matchesDuration ( String arg ) { } public static boolean matchesInteger ( String arg ) { } @ Deprecated public static boolean matchesItem ( String arg ) { } @ Deprecated public static boolean matchesContext ( String arg ) { } @ Deprecated public static Map < String , String > getContextFrom ( String arg ) { } @ Deprecated public static boolean matchesLocation ( String arg ) { } @ Deprecated public static boolean matchesQuantity ( String arg ) { } @ Deprecated public static boolean matchesQueue ( String arg ) { } @ Deprecated public static boolean matchesScript ( String arg ) { } @ Deprecated public static boolean matchesState ( String arg ) { } static final Pattern matchesScriptPtrn = Pattern . compile ( "script:(.+)" , Pattern . CASE_INSENSITIVE ) ; }

Fix:
if ( CoreUtilities . toLowerCase ( value . replace ( "<seq2seq4repair_space>" , "" ) ) . equals ( lower_value ) ) {